SaaS & Startup Calculators
MRR
LTV
Churn
Runway
Monthly Recurring Revenue (MRR)
Customer Lifetime Value (LTV)
Churn Rate
Startup Runway
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Master Your SaaS Metrics.
12 Essential Calculators
MRR, CAC, LTV & More
SEOScaleUp SaaS & Startup Calculators: 12 essential tools for MRR, CAC, LTV, churn, gross margin, runway, and customer acquisition efficiency. Perfect for founders, CFOs, and investors who need accurate metrics.
✔ MRR/ARR
✔ CAC & LTV
✔ Churn & Runway
✔ Gross Margin
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3.2M+Calculations
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12Essential Metrics
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50K+Startups Trust Us
Stop spreadsheet chaos — get all SaaS metrics in one place
Founders waste hours building spreadsheets for MRR, CAC, LTV, and churn — often with formula errors that lead to bad decisions. Investors demand accurate metrics.
Our SaaS & Startup Calculator suite includes 12 essential tools: MRR/ARR, Customer Acquisition Cost (CAC), Customer Lifetime Value (LTV), LTV:CAC ratio, Gross Margin, Churn Rate, Runway, Payback Period, Net Revenue Retention (NRR), and more. Enter your numbers once, get all metrics instantly.
MRR Calculator
CAC Calculator
LTV Calculator
Churn Calculator
📈12-in-1 Suite
All essential SaaS metrics
⚡Instant Insights
No manual formulas
Every metric you need to scale your SaaS
From MRR to NRR — all the numbers investors and boards demand
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MRR / ARR Calculator
Monthly Recurring Revenue and Annual Recurring Revenue from subscribers. Essential SaaS metric.
→ Primary valuation metric for investors
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Customer Acquisition Cost (CAC)
Total marketing & sales spend ÷ new customers. Know what you pay for each customer.
→ Optimize marketing efficiency
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Customer Lifetime Value (LTV)
LTV = ARPU × Gross Margin ÷ Churn. Predict long-term customer value.
→ Determine sustainable CAC
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LTV:CAC Ratio
Customer Lifetime Value ÷ Acquisition Cost. Target >3x for healthy unit economics.
→ Ultimate health check for investors
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Gross Margin Calculator
(Revenue – COGS) / Revenue. Know your product-level profitability.
→ Understand true profit per sale
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Churn Rate Calculator
Customers lost ÷ total customers. Monthly and annual churn rates.
→ Retention is the #1 growth lever
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Runway Calculator
Cash balance ÷ net burn rate. Know how many months until zero cash.
→ Plan fundraising timing
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CAC Payback Period
CAC ÷ (Monthly ARPU × Gross Margin). Months to recover acquisition cost.
→ Manage cash flow
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Net Revenue Retention (NRR)
(Starting MRR + expansion – churn – contraction) / Starting MRR. The gold standard.
→ Top SaaS companies have NRR > 120%
From raw numbers to actionable insights in seconds
Three steps to complete SaaS metric clarity
1
Enter your data
Revenue, customers, spend
2
Select calculator
MRR, CAC, LTV, churn, etc.
3
Get instant results
All metrics calculated automatically
4
Export & share
CSV for board decks
Scale smarter with accurate SaaS metrics
Stop guessing — start measuring what matters.
✓Save 10+ hours per week
No more manual spreadsheet formulas and debugging
✓Impress investors with clean metrics
Show you understand unit economics
✓Identify growth opportunities
See which levers drive LTV and reduce churn
✓Optimize marketing spend
Channel CAC analysis reveals efficiency
✓Avoid cash flow surprises
Runway and payback period projections
Essential for founders, CFOs & investors
Real people using SaaS metrics to scale
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SaaS Founders & CEOs
- ✓ Calculate MRR and ARR for investor updates
- ✓ Track LTV:CAC ratio for fundraising readiness
- ✓ Monitor churn and retention metrics
- ✓ Plan runway and fundraising timing
- ✓ Set growth targets based on unit economics
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CFOs & Finance Teams
- ✓ Build accurate financial models with SaaS metrics
- ✓ Calculate NRR for board reporting
- ✓ Track gross margin by product line
- ✓ Forecast cash flow with runway projections
- ✓ Prepare for due diligence
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Marketing Leaders
- ✓ Calculate CAC by channel (paid, organic, referral)
- ✓ Determine CAC payback period for each channel
- ✓ Optimize spend toward highest-LTV channels
- ✓ Set channel-specific CAC targets
- ✓ Prove marketing ROI to finance
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Venture Capital & Investors
- ✓ Evaluate portfolio company unit economics
- ✓ Compare LTV:CAC across investments
- ✓ Assess churn risk and retention quality
- ✓ Model funding needs based on runway
- ✓ Identify companies ready to scale
Trusted by 50,000+ SaaS startups
Professional-grade metrics, completely free
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12 essential metrics
MRR, CAC, LTV, LTV:CAC, Gross Margin, Churn, Runway, Payback Period, NRR, and more.
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Standard formulas
Uses industry-standard formulas that investors and boards recognize and trust.
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100% free, no data collection
Your financial data stays private. No accounts, no email, no tracking.
Why SEOScaleUp beats spreadsheets & paid tools
SaaS metrics questions answered
What’s the most important SaaS metric?+For early-stage startups: Runway. For growth-stage: LTV:CAC ratio and NRR (Net Revenue Retention). For public companies: NRR and Gross Margin. Investors prioritize LTV:CAC > 3x and NRR > 100%.
What’s a healthy LTV:CAC ratio?+Target LTV:CAC > 3x. Below 3x means you’re spending too much to acquire customers. Between 3x-5x is healthy. Above 5x means you may be under-investing in growth.
What’s good monthly churn for SaaS?+B2B SaaS: 1-2% monthly churn is healthy. B2C: 3-5% is typical. Under 1% is exceptional. Enterprise SaaS can be under 0.5%. Reducing churn by 1% can double LTV.
How do I calculate NRR?+NRR = (Starting MRR + Expansion – Churn – Contraction) / Starting MRR. Top SaaS companies have NRR > 120%, meaning existing customers spend 20%+ more over time.
What’s a good gross margin for SaaS?+Target >75% gross margin. Top SaaS companies achieve 80-85%. Lower margins indicate high hosting costs, support costs, or third-party fees.
How much runway should a startup have?+Best practice: 18-24 months of runway after a raise. Start fundraising when you have 6-9 months left. Less than 6 months is “danger zone.”
What’s CAC payback period?+Payback period = CAC / (Monthly ARPU × Gross Margin). Best-in-class SaaS: <12 months. Acceptable: 12-18 months. Concerning: >24 months.
Are these calculators accurate for my business?+Yes — all calculators use standard SaaS formulas. For best results, use actual financial data. Our tools are used by thousands of SaaS companies for board reporting and investor updates.
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